CN114810617B

CN114810617B - Method and conveying device for preventing medium from binding shaft bushing and shaft sleeve of submerged pump

Info

Publication number: CN114810617B
Application number: CN202110116983.5A
Authority: CN
Inventors: 王保利; 程治国; 郭凯; 杨宇; 曹辉; 王垚家; 周景峰; 吕瑞东; 郭晓东; 焦鑫; 申轶华; 任高攀; 陈波; 李彦军; 常云飞; 史东坡; 薛二宝; 牛小宇
Original assignee: Shanxi Luan Coal Based Clean Energy Co Ltd
Current assignee: Shanxi Luan Coal Based Clean Energy Co Ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2024-02-06
Anticipated expiration: 2041-01-28
Also published as: CN114810617A

Abstract

The invention discloses a method and a conveying device for preventing mediums from being bonded with a bushing and a shaft sleeve of a submerged pump, and belongs to the technical field of medium liquid conveying. The method of preventing the medium from adhering to the bushing and sleeve of the submerged pump includes: medium liquid is input into a lubrication channel formed by a gap between a shaft bushing and a shaft sleeve on the periphery of a pump shaft arranged in the submerged pump, so that the shaft bushing and the shaft sleeve are prevented from being bonded due to solidification of medium accumulated in the lubrication channel between the shaft bushing and the shaft sleeve of the submerged pump. According to the method for preventing the medium from bonding the bushing and the shaft sleeve of the submerged pump, disclosed by the invention, the medium liquid entering the lubrication channel between the bushing and the shaft sleeve has a higher temperature, so that on one hand, the solidification and accumulation of the medium in the lubrication channel of the submerged pump can be avoided, and the bushing and the shaft sleeve of the submerged pump can be prevented from being bonded by the medium; on the other hand, the medium liquid can lubricate the shaft sleeve and the shaft bushing, reduce friction between the shaft sleeve and the shaft bushing, reduce vibration generated by rotation of the pump shaft and improve the rotation stability of the pump shaft.

Description

Method and conveying device for preventing medium from binding shaft bushing and shaft sleeve of submerged pump

Technical Field

The invention relates to the technical field of medium liquid conveying, in particular to a method and a conveying device for preventing a medium from being bonded with a bushing and a shaft sleeve of a submerged pump.

Background

The molten salt pump belongs to a submerged pump, is used for conveying high-temperature molten salt (the temperature of the molten salt is usually 220-560 ℃), is widely used for industrial parts such as ionic membrane caustic soda, alumina, melamine, organic chemical industry and the like, and can also be used for conveying liquid of other high-temperature solid particle-free media; the pump shaft that is equipped with in the current molten salt pump is longer, and the vibration that the molten salt pump arouses when rotatory and the noise that produces are great, need the axle bush to support generally to just installing the axle sleeve to the axle bush on the pump shaft, have the clearance between axle sleeve and the axle bush, axle sleeve and axle bush sliding contact support pump shaft in order to reduce vibration and noise, improve the rotatory stability of pump shaft.

Further, when the molten salt pump is used, the molten salt pump is immersed in molten salt, and when the molten salt pump is stopped, part of molten salt in the molten salt pump flows back into the molten salt pool, so that molten salt is easy to accumulate at a gap between the shaft sleeve and the shaft bushing; in addition, when using the molten salt pump to carry high temperature molten salt, gap department between axle sleeve and the axle sleeve also has the molten salt to stay and solidify because of stopping heating for axle sleeve and axle sleeve bond together, when starting the molten salt pump once more, the friction between axle sleeve and the axle sleeve is great, influences the normal start of molten salt pump, moreover, along with the extension of molten salt pump live time, the molten salt that the gap department between axle sleeve and the axle sleeve was piled up can be more and more, and the influence on the normal start of molten salt pump is bigger even leads to the molten salt pump to start the load too big and damage the molten salt pump. Furthermore, the structure of the molten salt pump is complex, and a plurality of vulnerable parts are arranged in the molten salt pump, so that the molten salt pump is easy to break down in the using process, inconvenience is brought to production, and other submerged pumps in the prior art have the same or similar problems as the molten salt pump.

In addition, the antimony-impregnated graphite material has good self-lubricating property, and has the performances of stable and high chemical property, good high temperature resistance, good corrosion resistance, high heat conductivity, small linear expansion coefficient, rapid cooling and rapid heating resistance and the like; therefore, the antimony-impregnated graphite material is usually adopted to prepare the bushing, but the antimony-impregnated graphite material is brittle, and the bushing prepared from the antimony-impregnated graphite is easy to break when being impacted and vibrated, particularly at the corner, so that the use cost of the molten salt pump is increased; further, there are similar one or more of the technical problems described above when the bushing is made of other self-lubricating materials; further, when the existing molten salt pump or other submerged pumps are used for conveying liquid such as sulfur and other easily-solidified, high-temperature and high-melting-point media, the technical problem that the easily-solidified media are solidified to cause the bushing and the shaft sleeve to be bonded together exists, and no applicable method for solving the problem exists at present. Thus, there is a need for a method of preventing the sticking of a bushing and a sleeve of a submerged pump, which can prevent the sticking of the bushing and the sleeve, and a device for transporting the bushing and the sleeve of the submerged pump, which can prevent the sticking of the bushing and the sleeve.

Disclosure of Invention

The object of the present invention is to overcome at least one of the drawbacks of the prior art described above, and to provide a method for preventing media from sticking to the bushing and sleeve of a submerged pump, and to provide a device for transporting a bushing and sleeve for preventing media from sticking to a submerged pump.

The technical scheme for solving the technical problems is as follows: a method of preventing media from binding a bushing and sleeve of a submerged pump, comprising:

and inputting medium liquid into a lubricating channel formed by a gap between a shaft bushing and a shaft sleeve at the periphery of a pump shaft arranged in the submerged pump, so as to prevent the medium accumulated in the lubricating channel between the shaft bushing and the shaft sleeve of the submerged pump from solidifying and bonding the shaft bushing and the shaft sleeve.

The beneficial effects of the invention are as follows: in the method for preventing the medium from adhering to the bushing and the shaft sleeve of the submerged pump, the medium liquid is input into the lubrication channel formed by the gap between the bushing and the shaft sleeve at the periphery of the pump shaft arranged in the submerged pump, the medium liquid entering the lubrication channel between the bushing and the shaft sleeve has higher temperature, so that on one hand, the medium is prevented from being accumulated in the lubrication channel of the submerged pump in a solidification way, and on the other hand, the medium liquid entering the lubrication channel between the bushing and the shaft sleeve can be melted to clean the accumulated medium under the condition that a small amount of medium is accumulated in the lubrication channel, therefore, the bushing and the shaft sleeve of the submerged pump can be prevented from adhering due to more medium accumulation in the lubrication channel when the submerged pump is operated or standby, and especially, when the submerged pump standby is required to be started, the medium accumulation in the lubrication channel between the shaft sleeve and the bushing in the submerged pump can be prevented from influencing the normal starting of the standby submerged pump, and the submerged pump can be prevented from being broken due to the bonding together with the submerged pump in the lubrication channel of the standby pump, so that the service life of the bushing and the bushing of the submerged pump in the standby is prolonged; on the other hand, when the submerged pump is operated, medium liquid entering a lubrication channel between the shaft sleeve and the shaft sleeve can lubricate the shaft sleeve and the shaft sleeve, so that the sliding surface between the shaft sleeve and the shaft sleeve is fully lubricated, the friction between the shaft sleeve and the shaft sleeve is reduced, the vibration generated by the rotation of the pump shaft is reduced, and the rotation stability of the pump shaft is improved.

In addition, on the basis of the technical scheme, the invention can be improved as follows and can also have the following additional technical characteristics.

According to one embodiment of the invention, the medium liquid is specifically introduced into a lubrication channel formed by a gap between a shaft bushing and a shaft sleeve at the periphery of a pump shaft arranged in a submerged pump, wherein the lubrication channel comprises:

through being equipped with a plurality of submerged pump, will a plurality of at least one submerged pump in the submerged pump as main submerged pump, with remaining submerged pump is as reserve submerged pump in the in-process of main submerged pump operation to in the reserve submerged pump the bush with in the lubrication channel between the axle sleeve input medium liquid.

In the embodiment, a plurality of submerged pumps are arranged, at least one submerged pump in the plurality of submerged pumps is used as a main submerged pump, and the rest submerged pumps are used as standby submerged pumps, so that if the running main submerged pump fails in the industrial production process, the standby submerged pump can be started to replace the main submerged pump to carry medium liquid, normal industrial production is ensured, and the influence on the industrial production due to the failure of the submerged pump is avoided; further, in the operation process of the main submerged pump, medium liquid is input into the lubrication channel between the shaft sleeve and the shaft sleeve in the standby submerged pump, so that medium accumulation solidification in the lubrication channel between the shaft sleeve and the shaft sleeve in the standby submerged pump can be avoided, the shaft sleeve and the shaft sleeve in the standby submerged pump are prevented from being bonded together, the standby submerged pump can be immediately and normally started to replace the main submerged pump to convey the medium liquid after the main submerged pump fails, the phenomenon that the normal starting of the standby submerged pump is influenced due to the medium accumulation solidification in the lubrication channel between the shaft sleeve and the shaft sleeve in the standby submerged pump can be avoided, the shaft sleeve is prevented from being broken due to the bonding between the shaft sleeve and the shaft sleeve when the standby submerged pump is started, the service life of the shaft sleeve is prolonged, the service life of the multiple submerged pumps can be further switched and used, the duration of continuous operation of each submerged pump is shortened, and the service life of the submerged pump is prolonged.

According to one embodiment of the invention, during operation of the main submerged pump, a medium liquid is simultaneously fed into the lubrication channel between the bushing and the sleeve in the main submerged pump. In this embodiment in the in-process of main submerged pump operation, simultaneously to in the main submerged pump the bush with in the lubrication channel between the axle sleeve is inputed medium liquid, gets into in the main submerged pump the bush and the axle sleeve in the lubrication channel between the axle sleeve can lubricate axle sleeve and the axle sleeve in the main submerged pump, is favorable to fully lubricating the sliding surface between axle sleeve and the axle sleeve, reduces friction between axle sleeve and the axle sleeve, reduces the rotatory vibration that produces of pump shaft and improves the rotatory stability of pump shaft.

According to one embodiment of the invention, a pump shaft is vertically arranged in the submerged pump from top to bottom, a rotary driving device is arranged at the upper end of the submerged pump, the upper end of the pump shaft is in transmission connection with the rotary driving device, a pump head for sucking medium liquid and sending out the sucked medium liquid is arranged at the lower end of the submerged pump, a cavity is arranged in the pump head, the lower end of the pump shaft extends into the cavity, an impeller is connected at the lower end of the pump shaft, and the impeller is positioned in the cavity;

The submerged pump is provided with a medium liquid output pipe for outputting medium liquid, one end of the medium liquid output pipe is connected to the submerged pump and is communicated with the cavity, and the other end of the medium liquid output pipe extends upwards to form a medium liquid output end; the method of preventing media from binding the bushing and sleeve of a submerged pump further comprises:

the lubrication medium liquid delivery pipe is connected among the medium liquid delivery pipes on the submerged pumps and is respectively communicated with the medium liquid delivery pipes;

one end of each of the plurality of lubricating medium liquid delivery branch pipes is connected with the lubricating medium liquid delivery pipe and communicated with the lubricating medium liquid delivery pipe, and the other end of each of the plurality of lubricating medium liquid delivery branch pipes is connected to the submerged pump near the upper ends of the bushings on the plurality of submerged pumps and communicated with the lubricating channel;

when the main submerged pump is operated, medium liquid is sent out from the medium liquid output pipe of the main submerged pump, and part of the medium liquid in the medium liquid output pipe entering the main submerged pump enters the medium liquid conveying pipe for lubrication and is conveyed into the medium liquid output pipe of the standby submerged pump, and part of the medium liquid entering the medium liquid conveying pipe for lubrication is conveyed into the lubrication channels in the main submerged pump and the standby submerged pump through the medium liquid conveying branch pipes for lubrication.

In this embodiment, by providing a lubrication medium liquid delivery pipe and a plurality of lubrication medium liquid delivery branch pipes, the plurality of lubrication medium liquid delivery branch pipes are connected with the lubrication medium liquid delivery pipe, when a certain submerged pump is operated as a main submerged pump, part of medium liquid in a medium liquid delivery pipe of the main submerged pump enters the lubrication medium liquid delivery pipe and is delivered into the medium liquid delivery pipe of the standby submerged pump, so that the phenomenon that the secondary delivery medium liquid of the medium liquid delivery pipe is affected due to solidification of residual medium in a bottom delivery outlet of the medium liquid delivery pipe of the standby submerged pump can be avoided; in addition, through the medium liquid conveying branch pipe for lubrication is carried to in the main submerged pump with in the lubrication channel in the reserve submerged pump, the medium liquid in the lubrication channel between the axle sleeve and the axle sleeve in the reserve submerged pump has higher temperature, can avoid solidification accumulation to have the medium in the lubrication channel of submerged pump, and the medium liquid in the lubrication channel between the axle sleeve and the axle sleeve in the main submerged pump can lubricate axle sleeve and the axle sleeve in the main submerged pump, is favorable to fully lubricating the sliding surface between axle sleeve and the axle sleeve in the main submerged pump, reduces friction between axle sleeve and the axle sleeve in the main submerged pump, reduces the rotatory vibration that produces of pump shaft and improves the rotatory stability of pump shaft.

According to one embodiment of the invention, the lubricating medium liquid delivery pipes are each provided with an on-off control valve at a position close to the medium liquid delivery pipe. In this embodiment, the on-off control valve is respectively arranged at the position close to the medium liquid output pipe of the lubrication medium liquid conveying pipe, so that the on-off control valve is conveniently opened or closed as required to enable the lubrication medium liquid conveying pipe and the medium liquid output pipe to be closed or conducted, the on-off control valve on the submerged pump close to running is conveniently opened, the on-off control valve on the submerged pump close to standby is closed, and the medium liquid in the lubrication medium liquid conveying pipe is only conveyed into the lubrication channel between the bushing and the shaft sleeve in the submerged pump, so that the lubrication effect is improved.

According to one embodiment of the invention, two submerged pumps are provided, one of which serves as a main submerged pump and the other of which serves as a backup submerged pump, and medium liquid is fed into the lubrication passage between the bushing and the sleeve in the main submerged pump and medium liquid is fed into the lubrication passage between the bushing and the sleeve in the backup submerged pump during operation of the main submerged pump. In the embodiment, two submerged pumps are arranged, and medium liquid is input into the lubricating channel between the bushing and the shaft sleeve in the main submerged pump and medium liquid is input into the lubricating channel between the bushing and the shaft sleeve in the standby submerged pump in the running process of the main submerged pump; the medium liquid in the lubrication channel between the shaft sleeve and the shaft bushing in the standby submerged pump has higher temperature, so that the solidification accumulation of the medium in the lubrication channel of the submerged pump can be avoided, the medium liquid in the lubrication channel between the shaft sleeve and the shaft sleeve in the main submerged pump can lubricate the shaft sleeve and the shaft sleeve in the main submerged pump, the sliding surface between the shaft sleeve and the shaft sleeve in the main submerged pump can be fully lubricated, the friction between the shaft sleeve and the shaft sleeve in the main submerged pump is reduced, the vibration generated by the rotation of the pump shaft is reduced, and the rotation stability of the pump shaft is improved; in addition, can also switch the use to two submerged pumps, reduce the duration of submerged pump's continuous operation, be favorable to improving submerged pump's life.

by providing a medium liquid conveying means for conveying a medium liquid into the lubrication channel between the bushing and the sleeve, a medium liquid is fed into the lubrication channel between the bushing and the sleeve by means of the medium liquid conveying means.

In the embodiment, the medium liquid conveying device is arranged, the medium liquid is conveyed into the lubrication channel between the shaft sleeve and the shaft bushing by the medium liquid conveying device, so that the medium liquid is conveniently and flexibly controlled to be conveyed into the lubrication channel, and when all submerged pumps stop running, the medium liquid can be conveyed into the lubrication channel by the medium liquid conveying device, so that the phenomenon that the medium is accumulated and solidified in the lubrication channel between the shaft sleeve and the shaft sleeve in the submerged pump due to the stop running of the submerged pump is avoided, and the shaft sleeve and the shaft bushing in the standby submerged pump are prevented from being bonded together; further, it is also convenient to control the amount of input medium liquid.

In addition, the present embodiment provides a conveying apparatus for preventing a medium from adhering to a bushing and a sleeve of a submerged pump, comprising:

The submerged pump is provided with a plurality of pumps, the pump shafts are vertically arranged in the submerged pump from top to bottom, the upper ends of the submerged pumps are provided with rotary driving devices, the upper ends of the pump shafts are in transmission connection with the rotary driving devices, the lower ends of the submerged pumps are provided with pump heads for sucking medium liquid and sending out the sucked medium liquid, cavities are arranged in the pump heads, the lower ends of the pump shafts extend into the cavities, and the lower ends of the pump shafts are connected with impellers which are positioned in the cavities;

the medium liquid output pipe is used for conveying medium liquid, one end of the medium liquid output pipe is connected to the submerged pump and is communicated with the cavity, and the other end of the medium liquid output pipe extends upwards to form a medium liquid output end;

the submerged pump is characterized in that a bushing is further arranged in the submerged pump, the pump shaft penetrates through the bushing, a shaft sleeve is arranged on the pump shaft and opposite to the bushing, the shaft sleeve is sleeved on the periphery of the pump shaft, a gap is formed between the shaft sleeve and the bushing to form a lubrication channel, and the lubrication channel is communicated with the cavity;

the medium liquid conveying pipe is used for conveying medium liquid into the lubricating channel, and is connected between the medium liquid output pipes on the submerged pumps and is respectively communicated with the medium liquid output pipes;

A plurality of lubricating medium liquid delivery branch pipes, wherein one ends of the lubricating medium liquid delivery branch pipes are respectively connected with the lubricating medium liquid delivery pipes and communicated with the lubricating medium liquid delivery pipes, and the other ends of the lubricating medium liquid delivery branch pipes are respectively connected to the submerged pumps close to the upper ends of the bushings on the submerged pumps and communicated with the lubricating channels;

when one submerged pump operates and the rest submerged pumps are standby, medium liquid can be sent out from a medium liquid output pipe of the operating submerged pump, part of the medium liquid in the medium liquid output pipe of the main submerged pump enters the medium liquid conveying pipe for lubrication and is conveyed into the medium liquid output pipe of the submerged pump of the standby machine, and part of the medium liquid in the medium liquid conveying pipe for lubrication enters the lubrication channel in the submerged pump of the operating and standby machine through the medium liquid conveying branch pipe for lubrication.

In the embodiment, the plurality of submerged pumps are arranged, so that in the process of industrial production, if one submerged pump fails, other submerged pumps can be used for replacing the medium liquid, normal operation of industrial production is ensured, and the influence on the industrial production due to the failure of the submerged pump is avoided; further, in this embodiment, a lubrication medium liquid delivery pipe and a lubrication medium liquid delivery branch pipe are provided, when one submerged pump is operated and the rest of submerged pumps are standby, medium liquid can be delivered from a medium liquid delivery pipe of the operated submerged pump, and part of medium liquid in the medium liquid delivery pipe of the main submerged pump enters the lubrication medium liquid delivery pipe and is delivered into the medium liquid delivery pipe of the submerged pump of the standby machine, and part of medium liquid in the lubrication medium liquid delivery pipe is delivered into the lubrication channel in the submerged pump of the operating and standby machine through the lubrication medium liquid delivery branch pipe; the medium liquid in the lubrication channel between the shaft sleeve and the shaft bushing in the submerged pump of the standby machine has higher temperature, so that the medium is prevented from being solidified and accumulated in the lubrication channel of the submerged pump of the standby machine, and the medium liquid in the lubrication channel between the shaft sleeve and the shaft sleeve in the running submerged pump can lubricate the shaft sleeve and the shaft sleeve in the running submerged pump, thereby being beneficial to fully lubricating the sliding surface between the shaft sleeve and the shaft sleeve in the running submerged pump, reducing the friction between the shaft sleeve and the shaft sleeve in the running submerged pump, reducing the vibration generated by the rotation of the pump shaft and improving the stability of the rotation of the pump shaft; in addition, can also switch the use to a plurality of submerged pumps, reduce the duration of submerged pump's continuous operation, be favorable to improving submerged pump's life.

According to one embodiment of the invention, the lubricating medium liquid delivery pipes are each provided with an on-off control valve at a position close to the medium liquid delivery pipe. In this embodiment, the on-off control valve is respectively arranged at the position close to the medium liquid output pipe of the lubrication medium liquid conveying pipe, so that the on-off control valve is conveniently opened or closed as required to enable the lubrication medium liquid conveying pipe and the medium liquid output pipe to be closed or conducted, the on-off control valve on the submerged pump close to running is facilitated to be opened, the on-off control valve on the submerged pump close to standby is closed, and the medium liquid in the lubrication medium liquid conveying pipe is only conveyed into the lubrication channel between the bushing and the shaft sleeve in the submerged pump, so that the lubrication effect is improved.

According to one embodiment of the invention, the circumference sides of the lubricating medium liquid delivery pipe and the lubricating medium liquid delivery branch pipe are respectively sleeved with a heat preservation sleeve. In this embodiment, the heat insulation sleeves are respectively sleeved on the circumference sides of the lubricating medium liquid conveying pipe and the lubricating medium liquid conveying branch pipe, and the lubricating medium liquid conveying pipe and the lubricating medium liquid conveying branch pipe are respectively insulated by the heat insulation sleeves, so that the heat energy loss of the medium liquid flowing in the lubricating medium liquid conveying pipe and the lubricating medium liquid conveying branch pipe can be reduced, the temperature of the medium liquid flowing in the lubricating medium liquid conveying pipe and the lubricating medium liquid conveying branch pipe can be reduced, the medium liquid still has a higher temperature when being conveyed into the lubricating channel through the lubricating medium liquid conveying pipe and the lubricating medium liquid conveying branch pipe, the lubricating channel can be reliably lubricated and supplemented with heat, and the medium in the lubricating channel is prevented from accumulating and solidifying.

Drawings

In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a bushing and sleeve delivery device for preventing media from binding a submerged pump according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of region I of FIG. 1;

FIG. 3 is an enlarged view of a portion of region II of FIG. 1;

fig. 4 is a schematic view of a medium liquid delivery device provided on a delivery device of a bushing and a sleeve of a submerged pump for preventing a medium from being adhered to the bushing and the sleeve according to an embodiment of the present invention.

In the drawings, the list of components represented by the various numbers is as follows:

1. a submerged pump 2, a medium liquid delivery pipe for lubrication, 3, a bushing, 4, a shaft sleeve, 5, a motor mounting seat, 6, a medium liquid delivery device, 10, a pump shaft, 11, a motor, 12, a first connecting cylinder, 13, a second connecting cylinder, 14, a first bushing mounting seat, 15, a second bushing mounting seat, 16, a pump head, 17, a first filter cylinder, 18, a liquid outlet connecting pipe, 19, a liquid outlet pipe, 20, a medium liquid delivery connecting pipe, 21, a first medium liquid delivery branch pipe for lubrication, 22, a second medium liquid delivery branch pipe for lubrication, 60, a second filter cylinder, 121, a first heat-preserving cylinder, 122, a first heat-preserving fluid input joint, 123, a first heat-preserving fluid delivery pipe, 131, a second heat-preserving cylinder, 132, a second heat-preserving fluid delivery pipe, 133, a third heat-preserving fluid delivery pipe, 141, a medium liquid input channel, 142, a fifth heat-preserving cylinder, 143, a medium liquid extrusion chamber, 151, a first heat-preserving fluid discharge joint, 152, a second medium liquid input channel, 153, a sixth heat-preserving cylinder, 154, a medium liquid extrusion chamber, 191, a third heat-preserving cylinder, 192, a fourth heat-preserving cylinder, a 193, a fourth heat-preserving fluid input joint.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

The present embodiment provides a method of preventing media from binding a bushing and sleeve of a submerged pump, which may be implemented using a delivery device as shown in fig. 1-3, comprising:

medium liquid is introduced into a lubrication passage formed by a gap between a bush 3 and a sleeve 4 provided on the circumferential side of a pump shaft 10 in a submerged pump 1, so that the medium accumulated in the lubrication passage between the bush 3 and the sleeve 4 of the submerged pump 1 is prevented from solidifying and bonding the bush 3 and the sleeve 4.

In this embodiment, a conveying device as shown in fig. 1 to 3 is adopted to implement the method of this embodiment, by inputting medium liquid into a lubrication channel formed by a gap between a shaft liner 3 and a shaft liner 4 on the circumferential side of a pump shaft 10 provided in a submerged pump 1, the medium liquid entering the lubrication channel between the shaft liner 3 and the shaft liner 4 has a higher temperature, on the one hand, the solidification and accumulation of medium in the lubrication channel of the submerged pump 1 can be avoided, and on the other hand, under the condition that a small amount of medium is accumulated in the lubrication channel, the medium liquid entering the lubrication channel between the shaft liner 3 and the shaft liner 4 can also melt the accumulated medium to clean, so that the shaft liner 3 and the shaft liner 4 of the submerged pump 1 can be prevented from being bonded due to the fact that more medium is accumulated in the lubrication channel, especially when the submerged pump 1 is required to be started up, the influence on the solidification of the medium accumulated in the lubrication channel between the shaft liner 4 and the shaft liner 3 in the submerged pump 1 can be avoided, and the life of the shaft liner 3 can be prevented from being broken and the normal starting up of the shaft liner 3 and the shaft liner 3 can be avoided; on the other hand, when the submerged pump 1 is in operation, the medium liquid entering the lubrication channel between the shaft sleeve 3 and the shaft sleeve 4 can lubricate the shaft sleeve 4 and the shaft sleeve 3, which is beneficial to fully lubricating the sliding surface between the shaft sleeve 4 and the shaft sleeve 3, reducing friction between the shaft sleeve 4 and the shaft sleeve 3, reducing vibration generated by rotation of the pump shaft 10 and improving the rotation stability of the pump shaft 10; it should be noted that, the method for preventing the medium from adhering to the bushing and the sleeve of the submerged pump in this embodiment may have a plurality of conveying apparatuses that may be implemented, and the conveying apparatus may achieve the above-mentioned effects and solve the above-mentioned technical problems, and will not be described herein.

In one embodiment of the present invention, as shown in fig. 1, the medium liquid is fed into a lubrication passage formed by a gap between a bush 3 and a sleeve 4 provided on the circumferential side of a pump shaft 10 in a submerged pump 1, specifically:

through being equipped with a plurality of submerged pumps 1, regard as the main submerged pump with at least one submerged pump 1 in a plurality of submerged pumps 1, regard as the reserve submerged pump with remaining submerged pump 1, in the in-process of main submerged pump operation, input medium liquid to the lubricated passageway between shaft bushing 3 and the axle sleeve 4 in the reserve submerged pump.

In this embodiment, as shown in fig. 1, by providing a plurality of submerged pumps 1, and taking at least one submerged pump 1 of the plurality of submerged pumps 1 as a main submerged pump and the rest submerged pumps 1 as backup submerged pumps, if the running main submerged pump fails in the industrial production process, the backup submerged pump can be started to replace the main submerged pump to carry medium liquid, so as to ensure normal industrial production and avoid influencing industrial production due to failure of the submerged pump 1; further, in the operation process of the main submerged pump, medium liquid is input into the lubrication channel between the shaft sleeve 3 and the shaft sleeve 4 in the standby submerged pump, thereby medium accumulation solidification in the lubrication channel between the shaft sleeve 4 and the shaft sleeve 3 in the standby submerged pump can be avoided, the shaft sleeve 4 and the shaft sleeve 3 in the standby submerged pump are prevented from being bonded together, the standby submerged pump can be immediately and normally started to replace the main submerged pump to convey the medium liquid after the main submerged pump fails, the normal start of the standby submerged pump due to the influence of the medium accumulation solidification in the lubrication channel between the shaft sleeve 4 and the shaft sleeve 3 in the standby submerged pump can be prevented, the shaft sleeve 3 is prevented from being broken due to the bonding between the shaft sleeve 4 and the shaft sleeve 3 when the standby submerged pump is started, the service life of the shaft sleeve 3 can be improved, the use of the submerged pumps 1 can be switched, the duration of continuous operation of each submerged pump 1 can be reduced, and the service life of the submerged pump 1 can be prolonged.

In one embodiment of the invention, during operation of the main submerged pump, a medium liquid is simultaneously fed into the lubrication channel between the bushing 3 and the sleeve 4 in the main submerged pump. In this embodiment, in the running process of the main submerged pump, medium liquid is simultaneously input into the lubrication channel between the shaft sleeve 3 and the shaft sleeve 4 in the main submerged pump, and the medium liquid entering the lubrication channel between the shaft sleeve 3 and the shaft sleeve 4 in the main submerged pump can lubricate the shaft sleeve 4 and the shaft sleeve 3 in the main submerged pump, so that the sliding surface between the shaft sleeve 4 and the shaft sleeve 3 is fully lubricated, friction between the shaft sleeve 4 and the shaft sleeve 3 is reduced, vibration generated by rotation of the pump shaft 10 is reduced, and the rotation stability of the pump shaft 10 is improved.

According to one embodiment of the invention, as shown in fig. 1, a pump shaft 10 is vertically arranged in the submerged pump 1 from top to bottom, a rotary driving device is arranged at the upper end of the submerged pump 1, the upper end of the pump shaft 10 is in transmission connection with the rotary driving device, a pump head 16 for sucking medium liquid and sending out the sucked medium liquid is arranged at the lower end of the submerged pump 1, a cavity is arranged in the pump head 16, the lower end of the pump shaft 10 extends into the cavity, and an impeller is connected with the lower end of the pump shaft 10 and is positioned in the cavity;

A medium liquid output pipe is arranged on the submerged pump 1 and used for outputting medium liquid, one end of the medium liquid output pipe is connected to the submerged pump 1 and communicated with the cavity, and the other end of the medium liquid output pipe extends upwards to form a medium liquid output end; the method of preventing media from binding the bushing and sleeve of a submerged pump further comprises:

the lubrication medium liquid delivery pipe 2 is arranged, and the lubrication medium liquid delivery pipe 2 is connected among medium liquid delivery pipes on the submerged pumps 1 and is respectively communicated with the medium liquid delivery pipes;

by providing a plurality of lubricating medium liquid delivery branch pipes, one ends of the plurality of lubricating medium liquid delivery branch pipes are respectively connected with the lubricating medium liquid delivery pipes 2 and are communicated with the lubricating medium liquid delivery pipes 2, and the other ends of the plurality of lubricating medium liquid delivery branch pipes are respectively connected to the submerged pumps 1 near the upper ends of the bushings 3 on the plurality of submerged pumps 1 and are communicated with the lubricating channels;

when the main submerged pump is operated, the medium liquid is sent out from the medium liquid output pipe of the main submerged pump, and part of the medium liquid entering the medium liquid output pipe enters the medium liquid conveying pipe 2 for lubrication and is conveyed into the medium liquid output pipe of the standby submerged pump, and part of the medium liquid entering the medium liquid conveying pipe 2 for lubrication is conveyed into the lubrication channels in the main submerged pump and the standby submerged pump through the medium liquid conveying branch pipes for lubrication.

In this embodiment, as shown in fig. 1, by providing a lubricating medium liquid delivery pipe 2 and a plurality of lubricating medium liquid delivery branch pipes, the plurality of lubricating medium liquid delivery branch pipes are connected to the lubricating medium liquid delivery pipe 2, and when a certain submerged pump 1 is operated as a main submerged pump, part of the medium liquid entering the medium liquid delivery pipe enters the lubricating medium liquid delivery pipe 2 and is delivered into the medium liquid delivery pipe of the standby submerged pump, so that the secondary delivery of the medium liquid by the solidification of the medium remaining in the bottom delivery outlet of the medium liquid delivery pipe of the standby submerged pump can be prevented; in addition, in the lubrication channel in main submerged pump and reserve submerged pump is carried through the medium liquid delivery branch pipe for lubrication, the medium liquid in the lubrication channel between the axle bush 3 and the axle bush 4 that gets into in the reserve submerged pump has higher temperature, can avoid solidification accumulation to have the medium in the lubrication channel of submerged pump 1, and the medium liquid in the lubrication channel between the axle bush 3 and the axle bush 4 that gets into in the main submerged pump can lubricate axle bush 4 and the axle bush 3 in the main submerged pump, be favorable to fully lubricating the slip plane between axle bush 4 and the axle bush 3 in the main submerged pump, reduce friction between axle bush 4 and the axle bush 3 in the main submerged pump, reduce the rotatory vibration that produces of pump shaft 10 and improve the rotatory stability of pump shaft 10.

In one embodiment of the present invention, the lubricating medium liquid transport pipes 2 are each provided with an on-off control valve at a position close to the medium liquid output pipe. In the embodiment, the on-off control valves are respectively arranged at positions, close to the medium liquid output pipes, of the lubricating medium liquid conveying pipes 2, so that the on-off control valves are conveniently opened or closed as required to enable the lubricating medium liquid conveying pipes 2 and the medium liquid output pipes to be closed or conducted, the on-off control valves on the submerged pumps 1 which are close to running are conveniently opened, the on-off control valves on the submerged pumps 1 which are close to standby are closed, and the medium liquid in the lubricating medium liquid conveying pipes 2 is only conveyed into a lubricating channel between the shaft bushing 3 and the shaft sleeve 4 in the submerged pumps 1, so that the lubricating effect is improved; in this embodiment, the switching control valve is not shown in the drawing.

In one embodiment of the invention, as shown in fig. 1, two submerged pumps 1 are provided, one submerged pump 1 is used as a main submerged pump, the other submerged pump 1 is used as a standby submerged pump, and medium liquid is input into a lubrication channel between a shaft bushing 3 and a shaft sleeve 4 in the main submerged pump and medium liquid is input into the lubrication channel between the shaft bushing 3 and the shaft sleeve 4 in the standby submerged pump during the operation of the main submerged pump.

In the present embodiment, as shown in fig. 1, by providing two submerged pumps 1, and during the operation of the main submerged pump, medium liquid is introduced into the lubrication passage between the bushing 3 and the sleeve 4 in the main submerged pump, while medium liquid is introduced into the lubrication passage between the bushing 3 and the sleeve 4 in the backup submerged pump; the medium liquid in the lubrication channel between the shaft sleeve 3 and the shaft sleeve 4 in the standby submerged pump has higher temperature, so that the solidification and accumulation of medium in the lubrication channel of the submerged pump 1 can be avoided, the medium liquid in the lubrication channel between the shaft sleeve 3 and the shaft sleeve 4 in the main submerged pump can lubricate the shaft sleeve 4 and the shaft sleeve 3 in the main submerged pump, the sliding surface between the shaft sleeve 4 and the shaft sleeve 3 in the main submerged pump is fully lubricated, the friction between the shaft sleeve 4 and the shaft sleeve 3 in the main submerged pump is reduced, the vibration generated by the rotation of the pump shaft 10 is reduced, and the rotation stability of the pump shaft 10 is improved; in addition, can also switch the use to two submerged pump 1, reduce the duration of submerged pump 1's continuous operation, be favorable to improving submerged pump 1's life. Further, the submerged pump 1 in the present embodiment may be provided with three, four, etc. as needed.

In one embodiment of the present invention, as shown in fig. 4, the medium liquid is fed into the lubrication passage formed by the gap between the bush 3 and the sleeve 4 on the circumferential side of the pump shaft 10 provided in the submerged pump 1, specifically:

by providing a medium liquid conveying means 6 for conveying medium liquid into the lubrication channel between the bushing 3 and the sleeve 4, the medium liquid is conveyed into the lubrication channel between the bushing 3 and the sleeve 4 by means of the medium liquid conveying means 6.

In this embodiment, as shown in fig. 4, by providing the medium liquid delivery device 6, the medium liquid is delivered into the lubrication channel between the bushing 3 and the shaft sleeve 4 by using the medium liquid delivery device 6, so that flexible control of delivering the medium liquid into the lubrication channel is facilitated, and when all submerged pumps 1 stop running, the medium liquid can be delivered into the lubrication channel by using the medium liquid delivery device 6, so that the phenomenon that the medium is accumulated and solidified in the lubrication channel between the shaft sleeve 4 and the bushing 3 in the submerged pump 1 due to the stop running of the submerged pump 1 is avoided, and the bonding between the shaft sleeve 4 and the bushing 3 in the standby submerged pump is avoided; further, it is also convenient to control the amount of input medium liquid.

In this embodiment, the lubrication medium liquid delivery pipe 2 is communicated with the output end of the medium liquid delivery device 6 through a connecting pipe, the medium liquid delivery device 6 in this embodiment is a pump body, the lower end of the medium liquid delivery device 6 is provided with a second filter cartridge 60, the periphery of the second filter cartridge 60 is provided with a plurality of filter holes, the second filter cartridge 60 can filter larger medium particles in the medium liquid pool, and further, the medium liquid delivery device in this embodiment can also adopt a small submerged pump. In this embodiment, unlike the other embodiments described above, the medium liquid feeding device 6 is used alone to feed the medium liquid for lubrication, and the other configurations of the submerged pump 1 may be the same as those of the other embodiments, and the lubrication medium liquid feeding pipe 2 in this embodiment is connected to the bushing mounting base 14 through the lubrication medium liquid feeding branch pipe 21, and the lubrication medium liquid feeding pipe 2 is connected to the bushing mounting base 15 through the lubrication medium liquid feeding branch pipe 22.

In addition, the present embodiment provides a conveying apparatus for preventing a medium from adhering to a bushing and a sleeve of a submerged pump, as shown in fig. 1 to 3, including: the submerged pump 1 is provided with a plurality of submerged pumps, a pump shaft 10 is vertically arranged in the submerged pump 1 from top to bottom, a rotary driving device is arranged at the upper end of the submerged pump 1, the upper end of the pump shaft 10 is in transmission connection with the rotary driving device, a pump head 16 for sucking medium liquid and sending out the sucked medium liquid is arranged at the lower end of the submerged pump 1, a cavity is arranged in the pump head 16, the lower end of the pump shaft 10 extends into the cavity, and the lower end of the pump shaft 10 is positioned in the cavity;

the medium liquid output pipe is used for conveying medium liquid, one end of the medium liquid output pipe is connected to the submerged pump 1 and communicated with the cavity, and the other end of the medium liquid output pipe extends upwards to form a medium liquid output end;

the submerged pump 1 is also internally provided with a shaft bushing 3, a pump shaft 10 passes through the shaft bushing 3, a shaft sleeve 4 is arranged on the pump shaft 10 opposite to the shaft bushing 3, the shaft sleeve 4 is sleeved on the periphery of the pump shaft 10 and forms a lubrication channel with a gap between the shaft sleeve 3, and the lubrication channel is communicated with the cavity;

a lubrication medium liquid delivery pipe 2 for delivering medium liquid into the lubrication channel, wherein the medium liquid delivery pipe is connected between medium liquid delivery pipes on the submerged pumps 1 and is respectively communicated with the medium liquid delivery pipes;

A plurality of lubricating medium liquid delivery branch pipes are arranged, one ends of the plurality of lubricating medium liquid delivery branch pipes are respectively connected with the lubricating medium liquid delivery pipes 2 and are communicated with the lubricating medium liquid delivery pipes 2, and the other ends of the lubricating medium liquid delivery branch pipes are respectively connected with the submerged pumps 1 near the upper ends of the bushings 3 on the plurality of submerged pumps 1 and are communicated with the lubricating channels;

when a certain submerged pump 1 operates and the rest submerged pumps 1 are ready for operation, medium liquid can be sent out from a medium liquid output pipe of the operating submerged pump 1, and part of the medium liquid entering the medium liquid output pipe enters a medium liquid conveying pipe 2 for lubrication and is conveyed into the medium liquid output pipe of the submerged pump 1 of the ready for operation, and part of the medium liquid entering the medium liquid conveying pipe 2 for lubrication is conveyed into a lubrication channel in the submerged pump 1 for operation and the ready for operation through a medium liquid conveying branch pipe for lubrication.

In the embodiment, a plurality of submerged pumps 1 are arranged, so that in the process of industrial production, if one submerged pump 1 fails, other submerged pumps 1 can replace the process of conveying medium liquid, normal operation of industrial production is ensured, and the influence on industrial production due to the failure of the submerged pump 1 is avoided; further, in this embodiment, a lubrication medium liquid delivery pipe 2 and a lubrication medium liquid delivery branch pipe are provided, when a certain submerged pump 1 is running and the rest submerged pumps 1 are ready for use, medium liquid can be delivered from a medium liquid delivery pipe of the running submerged pump 1, and part of the medium liquid entering the medium liquid delivery pipe enters the lubrication medium liquid delivery pipe 2 and is delivered into a medium liquid delivery pipe of the submerged pump 1 of the ready for use, and part of the medium liquid entering the lubrication medium liquid delivery pipe 2 is delivered into a lubrication channel in the running submerged pump 1 of the ready for use through the lubrication medium liquid delivery branch pipe; the medium liquid entering the lubrication channel between the shaft sleeve 3 and the shaft sleeve 4 in the submerged pump 1 of the standby machine has higher temperature, so that the solidification and accumulation of the medium in the lubrication channel of the submerged pump 1 of the standby machine can be avoided, the medium liquid entering the lubrication channel between the shaft sleeve 3 and the shaft sleeve 4 in the running submerged pump 1 can lubricate the shaft sleeve 4 and the shaft sleeve 3 in the running submerged pump 1, the sliding surface between the shaft sleeve 4 and the shaft sleeve 3 in the running submerged pump 1 is favorable for fully lubricating, the friction between the shaft sleeve 4 and the shaft sleeve 3 in the running submerged pump 1 is reduced, the vibration generated by the rotation of the pump shaft 10 is reduced, and the stability of the rotation of the pump shaft 10 is improved; in addition, can also switch the use to a plurality of submerged pumps 1, reduce the duration of submerged pump 1's continuous operation, be favorable to improving submerged pump 1's life. Further, the conveying apparatus for preventing the medium from adhering to the bushing and the sleeve of the submerged pump in the present embodiment may implement the above-described method for preventing the medium from adhering to the bushing and the sleeve of the submerged pump.

In this embodiment, as shown in fig. 1, two submerged pumps 1 are provided, a pump shaft 10 is vertically provided in the submerged pump 1 from top to bottom, a rotation driving device is provided at the upper end of the submerged pump 1, the upper end of the pump shaft 10 is in transmission connection with the rotation driving device, a pump head 16 for sucking medium liquid and delivering the sucked medium liquid is provided at the lower end of the submerged pump 1, a cavity is provided in the pump head 16, the lower end of the pump shaft 10 extends into the cavity, an impeller is connected at the lower end of the pump shaft 10 and the impeller is located in the cavity; the submerged pump 1 is also internally provided with a shaft bushing 3, a pump shaft 10 passes through the shaft bushing 3, a shaft sleeve 4 is arranged on the pump shaft 10 opposite to the shaft bushing 3, the shaft sleeve 4 is sleeved on the periphery of the pump shaft 10 and forms a lubrication channel with a gap between the shaft sleeve 3, and the lubrication channel is communicated with the cavity; one side of the submerged pump 1 is provided with a medium liquid output pipe, the medium liquid output pipe is used for conveying medium liquid, one end of the medium liquid output pipe is connected to the submerged pump 1 and communicated with the cavity, and the other end of the medium liquid output pipe extends upwards to form a medium liquid output end. The rotary driving device in the embodiment is a motor 11, and the motor 11 is arranged on a motor mounting seat 5; in addition, the rotation driving device in the present embodiment may employ other rotation driving means.

In this embodiment, as shown in fig. 1, a motor 11 on a submerged pump 1 is mounted on a motor mounting seat 5 through a mounting seat, a first connecting cylinder 12 is connected to the lower end of the mounting seat, a first bushing mounting seat 14 is connected to the lower end of the first connecting cylinder 12, a second connecting cylinder 13 is connected to the lower end of the first bushing mounting seat 14, a second bushing mounting seat 15 is connected to the lower end of the second connecting cylinder 13, and a pump head 16 is mounted at the lower end of the second bushing mounting seat 15.

In this embodiment, as shown in fig. 1, the medium liquid output tube of the submerged pump 1 includes a liquid outlet connecting tube 18 and a liquid outlet tube 19, the lower end of the liquid outlet connecting tube 18 is connected to the pump head 16, the upper end of the liquid outlet connecting tube 18 is connected to the liquid outlet tube 19, and the upper end of the liquid outlet tube 19 in this embodiment penetrates out of the motor mounting seat 5, and can be connected to a conveying tube at the output end of the liquid outlet tube 19 to output the medium liquid. Further, in the present embodiment, the liquid outlet pipe 19 is connected to the pump head 16 of the submerged pump 1, and the liquid outlet pipe 19 may be connected above the pump head 16 of the submerged pump 1, so that the medium liquid can be delivered.

In this embodiment, as shown in fig. 1, a first filter cartridge 17 is disposed at the lower end of the submerged pump 1, and a plurality of filter holes are disposed on the first filter cartridge 17, so that the first filter cartridge 17 can filter the medium liquid, and larger medium particles in the medium liquid are prevented from being extracted and sent out. Further, when the easily solidified medium transporting device is used, the lower end of the submerged pump 1 is immersed in the medium liquid, the first filter cartridge 17 is positioned below the liquid surface of the medium liquid, and when the submerged pump 1 is operated, the blades in the submerged pump 1 rotate and suck in and send out the sucked medium liquid.

In this embodiment, as shown in fig. 1 to 3, after the submerged pump 1 is stopped, the submerged pump 1 needs to be started again, before starting, the medium remained in the submerged pump 1 is solidified in the submerged pump 1, in order to facilitate melting of the solidified medium remained in the submerged pump 1, in this embodiment, a first insulation tube 121 is arranged at the periphery of a first connection tube 12, a second insulation tube 131 is arranged at the periphery of a second connection tube 13, a fifth insulation tube 142 is installed at the periphery of a first bushing mounting seat 14, a sixth insulation tube 153 is installed at the periphery of a second bushing mounting seat 15, the upper end of the first insulation tube 121 is connected with a first insulation fluid input connector 122, insulation fluid is input from the first insulation fluid input connector 122 through a conveying tube, a first insulation fluid conveying tube 123 is connected between the lower end of the first insulation tube 121 and the fifth insulation tube 142, a second insulation fluid conveying tube 132 is connected between the upper end of the second insulation tube 131 and the fifth insulation tube 142, a third insulation fluid conveying tube 153 is connected between the lower end of the second insulation tube 131 and the sixth insulation tube 153, and the sixth insulation fluid discharge tube 153 is further connected with the first insulation fluid discharge tube 151 by means of the first insulation fluid discharge tube 153; further, a third insulation cylinder 191 is disposed on the upper end periphery of the liquid outlet pipe 19 in the present embodiment, a fourth insulation cylinder 192 is disposed on the middle and lower end periphery of the liquid outlet pipe 19, a first insulation fluid input pipe 193 is connected to the upper end of the third insulation cylinder 191, a fourth insulation fluid conveying pipe 194 is connected between the lower end of the third insulation cylinder 191 and the upper end of the fourth insulation cylinder 192, a second insulation fluid discharge joint 195 is connected to the lower end of the fourth insulation cylinder 192, the second insulation fluid discharge joint 195 is connected to the insulation fluid discharge pipe, insulation fluid can be input from the first insulation fluid input pipe 193, and the insulation fluid can be recycled by being discharged from the second insulation fluid discharge joint 195.

In this embodiment, as shown in fig. 1, the plurality of submerged pumps 1 have the same structure, and other submerged pumps having different structures may be used as the submerged pump 1, so that the transfer of the medium liquid can be facilitated. It should be noted that, the "medium liquid" in this embodiment may be a liquid easily-solidified medium such as molten salt, liquid sulfur, and the like.

In the present embodiment, as shown in fig. 1, the lubricating medium liquid feed pipe 2 is connected to the liquid outlet pipe 19 through the medium liquid feed connecting pipe 20, and the medium liquid feed connecting pipe 20 is connected to the upper end of the liquid outlet pipe 19 and communicates with the liquid outlet pipe 19, or the lubricating medium liquid feed pipe 2 may be directly connected to the liquid outlet connecting pipe 18, or the like, so that the lubricating medium liquid can be fed out when the submerged pump 11 is operated. Further, the first and second lubricant liquid delivery branch pipes 21 and 22 are provided in the present embodiment, and in the case where the two submerged pumps 1 are provided in the present embodiment, the first and second lubricant liquid delivery connecting pipes 20 and 21 and the second lubricant liquid delivery branch pipe 22 are provided in each of them.

In the present embodiment, as shown in fig. 1 to 3, the bushings 3 are respectively mounted on the bushing mount 14 and the bushing mount 15, and the shaft sleeve 4 is provided on the pump shaft 10 corresponding to the bushing 3. In this embodiment, a first medium liquid input channel 141 is radially provided on the first bushing mounting base 14, the first medium liquid input channel 141 radially penetrates into the first bushing mounting base 14, and the first lubrication medium liquid delivery branch pipe 21 is connected with the first medium liquid input channel 141 through a pipe joint; in addition, a groove I recessed toward the inner side of the bushing 3 is arranged on the outer side wall of the bushing 3 installed in the bushing installation seat I14, the bushing 3 is installed in the bushing installation seat I14, a medium liquid extrusion cavity I143 is defined between the groove I and the bushing installation seat I14, the medium liquid extrusion cavity I143 is communicated with the medium liquid input channel I141, and the medium liquid extrusion cavity I143 in the embodiment is in a cylindrical structure; the lubrication channel arranged between the bushing 3 and the shaft sleeve 4 of the bushing mounting seat 14 is specifically a lubrication channel I, a plurality of liquid flow holes are radially formed in the bushing 3, the lubrication channel I is communicated with the medium liquid extrusion cavity 143 through the liquid flow holes, medium liquid can be filled in the medium liquid extrusion cavity 143 and respectively enter the lubrication channel I through the liquid flow holes, and then the medium liquid in the lubrication channel I flows back to the medium liquid pool or cavity under the action of gravity.

Further, it should be noted that the bushing 3 in this embodiment may have various structures, and in the case that the bushing 3 in this embodiment is not provided with the fluid flow holes, the medium fluid may be introduced into the first and second slide channels in other manners, for example, the medium fluid is introduced from the upper portion of the bushing 3, and the medium fluid flows into the first and second slide channels under the action of gravity.

In this embodiment, as shown in fig. 1, a groove two recessed toward the inner side of the bushing 3 is provided on the outer side wall of the bushing 3 installed in the bushing mounting seat two 15, the bushing 3 is installed in the bushing mounting seat two 15, a medium liquid extrusion chamber two 154 is defined between the groove two and the bushing mounting seat two 15, the medium liquid extrusion chamber two 154 is communicated with the medium liquid input channel two 152, and the medium liquid extrusion chamber two 154 in this embodiment has a cylindrical structure; the lubrication channel arranged between the bushing 3 and the shaft sleeve 4 of the bushing mounting seat 15 is specifically a lubrication channel II, a plurality of liquid flow holes are radially formed in the bushing 3, the lubrication channel II is communicated with the medium liquid extrusion cavity 154 through the liquid flow holes, the medium liquid can be filled in the medium liquid extrusion cavity 154 and enter the lubrication channel II through the liquid flow holes respectively, and then the medium liquid in the lubrication channel II flows back to the medium liquid pool or cavity under the action of gravity.

In one embodiment of the present invention, the lubricating medium liquid transport pipes 2 are each provided with an on-off control valve at a position close to the medium liquid output pipe. In the embodiment, the on-off control valves are respectively arranged at the positions, close to the medium liquid output pipes, of the lubricating medium liquid conveying pipes 2, so that the on-off control valves are conveniently opened or closed as required to enable the lubricating medium liquid conveying pipes 2 and the medium liquid output pipes to be closed or conducted, the on-off control valves on the submerged pumps 1 which are close to running are conveniently opened, the on-off control valves on the submerged pumps 1 which are close to standby are closed, and the medium liquid in the lubricating medium liquid conveying pipes 2 is only conveyed into a lubricating channel between the shaft bushing 3 and the shaft sleeve 4 in the submerged pumps 1, so that the lubricating effect is improved; further, the on-off control valve in the present embodiment is not illustrated.

According to an embodiment of the present invention, the lubricating medium liquid transporting pipe 2 and the lubricating medium liquid transporting branch pipe are respectively provided with thermal insulation sleeves in a sleeved manner at the peripheral sides thereof. In this embodiment, the heat-insulating sleeves are respectively sleeved on the circumference sides of the lubricating medium liquid conveying pipe 2 and the lubricating medium liquid conveying branch pipe, and the lubricating medium liquid conveying pipe 2 and the lubricating medium liquid conveying branch pipe are respectively insulated by the heat-insulating sleeves, so that the heat energy loss of the medium liquid flowing in the lubricating medium liquid conveying pipe 2 and the lubricating medium liquid conveying branch pipe can be reduced to reduce more temperature, the medium liquid still has higher temperature when being conveyed into the lubricating channel through the lubricating medium liquid conveying pipe 2 and the lubricating medium liquid conveying branch pipe, the lubricating channel can be reliably lubricated and supplemented with heat, and the medium in the lubricating channel is prevented from being accumulated and solidified; it should be noted that, the insulation sleeve in this embodiment is not illustrated, the insulation sleeve in this embodiment may adopt a sleeve-type insulation structure, and the insulation is realized by connecting with an insulation system and inputting insulation fluid into the insulation sleeve through an insulation fluid conveying pipe, and the insulation fluid may be high-temperature vapor or the like.

In addition, in addition to the technical solutions disclosed in the present embodiment, reference may be made to conventional technical solutions in the art for the molten salt pump, other structures of the submerged pump 1, and the like in the present invention, and these conventional technical solutions are not important to the present invention, and the present invention is not described in detail herein.

In the present invention, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or unit referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method of preventing media from binding a bushing and sleeve of a submerged pump, comprising:

inputting medium liquid into a lubrication channel formed by a gap between a shaft bushing and a shaft sleeve at the periphery of a pump shaft arranged in a submerged pump, and preventing the medium accumulated in the lubrication channel between the shaft bushing and the shaft sleeve of the submerged pump from solidifying to bond the shaft bushing and the shaft sleeve;

The medium liquid is input into a lubricating channel formed by a gap between a shaft bushing and a shaft sleeve at the peripheral side of a pump shaft arranged in the submerged pump, and is specifically as follows:

by arranging a plurality of submerged pumps, at least one submerged pump of the submerged pumps is used as a main submerged pump, the rest submerged pumps are used as standby submerged pumps, and medium liquid is input into the lubricating channel between the bushing and the shaft sleeve in the standby submerged pumps in the running process of the main submerged pumps;

the submerged pump is characterized in that a pump shaft is vertically arranged in the submerged pump from top to bottom, a rotary driving device is arranged at the upper end of the submerged pump, the upper end of the pump shaft is in transmission connection with the rotary driving device, a pump head for sucking medium liquid and sending out the sucked medium liquid is arranged at the lower end of the submerged pump, a cavity is arranged in the pump head, the lower end of the pump shaft stretches into the cavity, an impeller is connected to the lower end of the pump shaft, and the impeller is positioned in the cavity;

the submerged pump is provided with a medium liquid output pipe for outputting medium liquid, one end of the medium liquid output pipe is connected to the submerged pump and is communicated with the cavity, and the other end of the medium liquid output pipe extends upwards to form a medium liquid output end; further comprises:

2. A method of preventing sticking of media to a bushing and sleeve of a submerged pump according to claim 1, characterized in that during operation of the submerged pump, media fluid is simultaneously fed into the lubrication channel between the bushing and sleeve in the submerged pump.

3. A method of preventing sticking of media to bushings and sleeves of submerged pumps according to claim 1, characterized in that the lubrication media fluid delivery pipes are each provided with an on-off control valve at a position close to the media fluid delivery pipe.

4. A method of preventing sticking of media to bushings and sleeves of a submerged pump according to claim 1, characterized in that said submerged pump is provided with two, one of said submerged pumps being a main submerged pump and the other being a backup submerged pump, during operation of said main submerged pump, media liquid is fed into said lubrication channel between said bushing and said sleeve in said main submerged pump, and media liquid is fed into said lubrication channel between said bushing and said sleeve in said backup submerged pump.

5. The method for preventing adhesion of a medium to a bushing and a sleeve of a submerged pump according to claim 1, wherein the feeding of the medium liquid into the lubrication passage formed by a gap between the bushing and the sleeve on the circumferential side of the pump shaft provided in the submerged pump is specifically:

6. A bushing and sleeve delivery device for preventing media from binding a submerged pump, comprising:

The lubrication medium liquid delivery pipe is used for delivering medium liquid into the lubrication channel, is connected between the medium liquid delivery pipes on the submerged pumps and is respectively communicated with the medium liquid delivery pipes;

when one submerged pump operates and the rest submerged pumps are standby, medium liquid can be sent out from a medium liquid output pipe of the operating submerged pump, part of the medium liquid in the medium liquid output pipe of the main submerged pump enters the medium liquid conveying pipe for lubrication and is conveyed into the medium liquid output pipe of the submerged pump of the standby machine, and part of the medium liquid entering the medium liquid conveying pipe for lubrication is conveyed into the lubrication channel in the submerged pump of the operating and standby machine through the medium liquid conveying branch pipe for lubrication.

7. The device for preventing adhesion of a medium to a bushing and a sleeve of a submerged pump of claim 6, wherein the lubricating medium liquid transporting pipes are each provided with an on-off control valve at a position close to the medium liquid discharging pipe.

8. The apparatus for transporting a bushing and a sleeve for a submerged pump for preventing adhesion of a medium according to claim 6 or 7, wherein the lubricating medium liquid transporting pipe and the lubricating medium liquid transporting branch pipe are each provided with a heat insulating jacket around their peripheral sides.